The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  0  2  4  0  2  2  0  2  2  2  0  2  4  4  0  0  0  0  2  2  4  2  2  4  2  2  2  2  1  1  2  2  1  2  4  2  4  2  0  1  1
 0  2  0  2  0  0  6  6  0  0  2  2  0  0  6  6  4  4  2  6  4  4  6  2  4  4  2  6  4  4  6  2  4  2  2  6  2  0  0  2  2  2  6  4  0  0  2  4  2  2  4  2  6  2  2  6  4  2  0  0  4  4  0  4  0  4  2  0  2  4  2  0  2  0  0
 0  0  2  2  0  6  6  0  4  6  6  4  4  2  2  4  4  2  2  0  4  2  6  4  0  6  6  4  0  6  2  0  2  2  4  0  6  2  6  4  2  6  0  2  2  6  6  2  0  0  2  4  4  2  2  2  6  4  0  4  4  0  0  4  4  0  2  2  0  6  4  6  0  0  4
 0  0  0  4  4  4  0  4  4  0  4  0  0  4  0  4  0  0  0  0  4  4  4  4  4  4  0  0  0  0  4  4  0  0  0  4  4  4  0  4  4  0  0  4  0  4  0  0  0  4  4  4  0  4  0  4  4  0  4  4  4  4  0  0  0  0  4  4  0  0  4  0  4  4  4

generates a code of length 75 over Z8 who´s minimum homogenous weight is 73.

Homogenous weight enumerator: w(x)=1x^0+130x^73+23x^74+16x^75+24x^76+8x^77+8x^78+7x^80+36x^81+2x^89+1x^90

The gray image is a code over GF(2) with n=300, k=8 and d=146.
This code was found by Heurico 1.16 in 33 seconds.